6 6/11×3/4÷2 2/5×2 1/5

Question

6 6/11×3/4÷2 2/5×2 1/5

Answer 1

6 6/11  ×  3/4 = 72/11  ×  3/4 =216/44 =  54/11 = 4 10/11
4 10/11  ÷  2 2/5 = 54/11  ÷  12/5 = 54/11  ×  5/12 =  45/22 = 2 1/22
2 1/22  ×  2 1/5 = 45/22  ×  11/5 = 495/110 =  9/2 = 4 1/2
ответ 4 1/2